Bulk titanium dioxide
Bulk Body Care titanium dioxide 100g | 500g | 1kg does not penetrate the skin barrier and is safe for sensitive skin. Titanium dioxide is both oil and water soluble.
Half teaspoon per 500g for glycerine soap. Cold process soap add titanium dioxide to the oil base fase and blend well then add the lye water solution about 1 teaspoon to 1kg handmade soap.